ef 85mm f1.8. Camera info says "lens not recognized", and hunts, viciously!I can set it to approximate subject focus manually, it then fine tunes, at times, and takes the image.Otherwise, the lens hunts constantly, and will black the rear screen, with a message that says error 1!

I just tried my 85 f1.8 and it worked with no issues. I have a 3rd party adapter made by VilTrox.

Well, it must not be an adapter problem because my Canon 85 f/1.8 will not autofocus with Viltrox adapter on EOS-M. Every other Canon lens works fine. I suspect it probably has to do with 85 f/1.8's age/version..

This is a shame, too, since I was counting on 85 f/1.8 to act as shallow DOF portrait lens on EOS-M since I sold off my Canon 50 f/1.4 after getting 50L, which is really too large to use often on EOS-M.